HOT-EXCITON RELAXATION IN CDXZN1-XTE/ZNTE MULTIPLE QUANTUM-WELLS

被引：80

作者：

STANLEY, RP

HEGARTY, J

FISCHER, R

FELDMANN, J

GOBEL, EO

FELDMAN, RD

AUSTIN, RF

机构：

[1] UNIV MARBURG,ZENTRUM MAT WISSENSCH,FACHBEREICH PHYS,W-3550 MARBURG,GERMANY

[2] AT&T BELL LABS,HOLMDEL,NJ 07733

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.67.128

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed the creation of hot excitons at high momentum in Cd(x)Zn(1-x)Te multiple quantum wells and subsequent relaxation by LO-phonon emission to give sharp luminescence lines superimposed on a broader background. The difference between the exciton lifetime and dephasing time in these materials allows definite identification of the sharp lines as due to luminescence rather than resonant Raman scattering. The results are consistent with excitons localized in alloy potential fluctuations.

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页码：128 / 131

页数：4

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